package com.xiye.common.util;


import cn.hutool.core.util.StrUtil;
import cn.hutool.http.HttpUtil;
import com.google.gson.Gson;
import com.xiye.common.entity.IpPositioning;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * @author 西野
 * @version V1.0
 * @title IpUtil.java
 * @package com.xiye.common.util
 * @description 根据IP地址查询对应的省市区信息
 * @date 2018-08-17
 */
public class IpUtil {
    private final static Logger logger = LoggerFactory.getLogger(IpUtil.class);

    /*
     * @Author 西野
     * @Date 2018-08-17 15:55:07
     * @Description 获取客户端IP地址
     * @Param [request]
     * @Return java.lang.String
     */
    public static String getIpAddr(HttpServletRequest request) {

        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
            if (ip.equals("127.0.0.1")) {
                //根据网卡取本机配置的IP
                InetAddress inet = null;
                try {
                    inet = InetAddress.getLocalHost();
                } catch (UnknownHostException e) {
                    e.printStackTrace();
                }
                ip = inet.getHostAddress();
            }
        }
        // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
        if (ip != null && ip.length() > 15) {
            if (ip.indexOf(",") > 0) {
                ip = ip.substring(0, ip.indexOf(","));
            }
        }
        if ("0:0:0:0:0:0:0:1".equals(ip)) {
            ip = "127.0.0.1";
        }
        return ip;
    }

    /*
     * @Author 西野
     * @Date 2018-08-17 15:55:27
     * @Description 获取IP返回地理信息
     * @Param [ip]
     * @Return java.lang.String
     */
    public static String getIpCity(String ip) {
        if (null != ip) {
            String url = Const.GET_IP_Postioning + ip;
            String result = "火星";
            try {
                String json = HttpUtil.get(url, 3000);
                IpPositioning locate = new Gson().fromJson(json, IpPositioning.class);
                if (("200").equals(locate.getRetCode())) {
                    if (StrUtil.isNotBlank(locate.getResult().getProvince())) {
                        result = locate.getResult().getProvince() + " " + locate.getResult().getCity();
                    } else {
                        result = locate.getResult().getCountry();
                    }
                }
            } catch (Exception e) {
                logger.info("获取IP信息失败");
            }
            return result;
        }
        return null;
    }
}
